84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
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SST_GLAPIResolve_Win32.c
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Author: Patrick Baggett <ptbaggett@762studios.com>
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Created: 12/12/2012
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Purpose:
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Runtime OpenGL symbol resolution (Win32)
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License:
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This program is free software. It comes without any warranty, to
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the extent permitted by applicable law. You can redistribute it
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and/or modify it under the terms of the Do What The Fuck You Want
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To Public License, Version 2, as published by Sam Hocevar. See
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http://sam.zoy.org/wtfpl/COPYING for more details.
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*/
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#include <windows.h>
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#include "GLAPIPrivate.h"
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typedef void* (WINAPI*pf_wglGetProcAddress)(const char* symbol);
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typedef struct GLAPIResolver_Win32
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{
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pf_wglGetProcAddress pwglGetProcAddress;
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HMODULE hDLL;
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} GLAPIResolver_Win32;
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/*************************************************************************/
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void* openLibGL(const char* path)
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{
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return (void*)LoadLibraryA(path);
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}
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/*************************************************************************/
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void closeLibGL(void* libGL)
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{
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FreeLibrary((HMODULE)libGL);
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}
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/*************************************************************************/
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int getResolver(void* oglLib, GLAPIResolver* res)
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{
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HMODULE hDLL = (HMODULE)oglLib;
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GLAPIResolver_Win32* resolver = (GLAPIResolver_Win32*)res;
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resolver->pwglGetProcAddress = (pf_wglGetProcAddress)GetProcAddress(hDLL, "wglGetProcAddress");
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resolver->hDLL = hDLL;
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return (resolver->pwglGetProcAddress != NULL);
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}
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/*************************************************************************/
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/* Return default OpenGL library name for platform */
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const char* defaultLibGLName()
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{
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return "opengl32.dll";
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}
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/*************************************************************************/
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void* resolveGLSymbol(const GLAPIResolver* res, const char* name)
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{
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void* sym;
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const GLAPIResolver_Win32* resolver = (const GLAPIResolver_Win32*)res;
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/* Try core (GL 1.1) symbol resolution first */
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sym = (void*)GetProcAddress(resolver->hDLL, name);
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/* If that fails, try wglGetProcAddress() for extension GL stuff */
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if(sym == NULL)
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sym = resolver->pwglGetProcAddress(name);
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return sym;
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}
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/*************************************************************************/
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